Soldier Crab

About

Commonly seen at low tide moving in large groups across the sand as they feed and quickly burrowing into the sand when disturbed. It is this large colony or group movement that gives them their common name.

These crabs roll up balls of sand to feed on as they move along leaving the balls behind as they go. These balls are visible along the beaches once the crabs burrowed away to await the next high tide when they repeat this process over again.

Identification

Adults of this crab are blues to grey in colour with a red to purple patch on each side light coloured legs and claws. The eyes are black on short stalks that are lighter in colour.

Size

Can grow to around 15mm across the carapace

Habitat

Can be found along intertidal beaches and mud flats at low tide

Distribution

Eastern Australia including around Tasmania

Gallery

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Local Sightings

2 recorded sightings in and around the area.

References & citations (2)

1. The Atlas of Living Australia (accessed 2021-09-22 14:03:33)
2. WoRMS (2021). Mictyris platycheles H. Milne Edwards, 1852. (accessed 2021-09-22 14:03:33)